Based on the tests of 60 blocks chosen from 3 masonry walls at random, this paper studied the differences of the rebound value for different options of resiliometers and blocks with or without ribbed position. And through 9 comparison tests of hollow concrete block masonry specimens by rebound method, this paper analyzed the relationship of rebound value of the blocks under different constraints, vertical load and concrete grouted. Based on the comparison and analysis of the experimental data, a general calculation formula of compressive strength for common concrete hollow brick in existing masonry was put forward. Confirmatory experimental results have shown the high accuracy of this formula, which can provide a basis for the revision of relevant standards.